My current Alden rotation includes the following:8.5D Grant boot (4065)8.5D JCrew PCT boot8.5D Hampton shoe (9016)8D Barrie shoe (975)The 8.5D Grant is my most snug fitting Alden (at the ball).For you, an 8E might be a good start ... but don't rule out an 8.5D.As an aside, I once owned an 8D Trubalance boot (CXL Indy) ... but a combination of the last and stretch of CXL resulted in very unsightly pinky-toe bulging.

I haven't had a pair of mocs since my undergrad years when I strolled around campus in my LLB camp and ranger mocs. I'd probably still have them if I knew back then that they could be resoled!
Fast forward 20 years later and I'm back in mocs, albeit a full size larger ... I received my pairs of Rancourt for Club Monaco ranger mocs.
I chose to keep the navy over the olive. Only the navy pairs came with both the leather and taslan laces ... and yes, that's how I wore...